A lady skilled in mathematics and physics, born at Jedburgh; was brought up at Burntisland and Edinburgh; contributed to the Transactions of the Royal Society; wrote a book entitled the "Mechanism of the Heavens" on the suggestion of Lord Brougham, as a popularisation of Laplace's "Mechanique Céleste," which was followed by her "Connection of the Physical Sciences," "Physical Geography," and "Molecular and Microscopic Science," the last published in her ninetieth year; died at Naples (1770-1872).